history and evolution of the internet and the world wide web

... College. I used the first edition of The Little Book of Semaphores along with one of the standard textbooks, and I taught Synchronization as a concurrent thread for the duration of the course. Each ... n = 5 and that 4 threads are waiting at the barrier. The value of the semaphore is the number of threads in queue, negated, which is -4. When the 5th thread signals the barrier, one of the waiting ... time, the value of the semaphore represents the number of additional threads that may enter. If the value is zero, then the next thread will block until one of the threads inside exits and signals....

Ngày tải lên: 15/03/2014, 11:20

Ngày tải lên: 11/06/2014, 12:45

Ngày tải lên: 09/08/2014, 01:22

... other things, the continu- ous creation of matter to keep the density of the expanding Universe constant. The steady-state universe was abandoned in the 1960s because of the proper- ties of the ... provide an estimate of H 0 , together with a strong confirmation of the validity of the Hubble law and, therefore, of the Cosmological Principle. Another test of this principle is the so-called Hubble ... be the case in the early years of the 20th century when the first steps were taken, by Einstein and others, towards a scientific theory of the Universe. Little was then known empirically about the distribution...

Ngày tải lên: 17/03/2014, 13:34

... scientific theory and there are many examples in the history of science that tell us so. The geocentric theory of the solar system, the phlogiston theory of burning and the concept of chemical ... observed on the satellite. The basis of the prediction was the 2:1 ratio of the periods of Io and Europa. Because of this the nearest approach, and hence the maximum perturba- tion, of Io by Europa ... and weaknesses are analysed. The only theory to essay a com- plete picture of the origin and evolution of the solar system is the Capture Theory developed by the author and colleagues since the...

Ngày tải lên: 17/03/2014, 13:35

Ngày tải lên: 03/06/2014, 01:49

Ngày tải lên: 04/06/2014, 11:45

Ngày tải lên: 06/08/2014, 19:20

... referral) may depend on the nature of the condition, whether the refer- ral is for reasons of diagnosis and/ or treatment, the pref- erence of the provider, and the relationship between the providers. ... composed of both chiropractic and medical professionals. The goals of the focus group were to explore the attitudes and experiences of medical and chiropractic clinicians regarding their patients ... situation, that the point of referral may depend on the familiarity or relationship between the providers, and that the nature of the referral (e.g., amount and type of information accompanying the referral)...

Ngày tải lên: 25/10/2012, 10:06

Ngày tải lên: 07/09/2013, 13:00

... re-evaluation of the role of BCG vaccination in the prevention and control of TB in the United States. CDC, the Advisory Council for the Elimination of Tuberculosis (ACET), and the Advisory Committee ... Control and Prevention. The role of BCG vaccine in the pre- vention and control of tuberculosis in the United States: a joint statement by the Advisory Council for the Elimination of Tuberculosis and ... BCG, and the skin-test results of such persons are used to support or exclude the diagnosis of M. tuberculosis infection. A diagnosis of M. tuberculosis infection and the use of preventive therapy...

Ngày tải lên: 15/02/2014, 13:20

Ngày tải lên: 18/02/2014, 04:20

... infection Cancer A number of in vivo studies have assessed the prognos- tic relevance of tumour- and stromal-derived PAI-2 in the metastatic spread of cancer of the neck, lung and breast [49–53]. The only established ... arguably the most consistent and physiologically relevant finding to date. Nonetheless, the response of the PAI-2 gene to such a diverse reper- toire of agonists and the impressive magnitude of induction ... minireview will focus on the cellular and molecular biology of PAI-2 and highlight some of the most recent findings on the role and impressive pattern of regulation of this enigmatic protease inhi- bitor....

Ngày tải lên: 20/02/2014, 02:21

... exhibit the same kinetics as those located on the intact protein. Therefore, determination of the kinetics of phosphorylation of these peptides allows the order of phosphorylation of the six ... structure. The two groups of peaks at 6.85 and 7.15 p.p.m. correspond to the aromatic resonances of the seven tyrosines in the protein, and the inset 2D expansion of the 1 H- 1 H COSY shows that the ... tyrosine by assaying the transfer of 32 P by recombinant Lck on to each of the peptides. The rates of phosphorylation were found to depend on the location of the tyrosine, leading to the pro- posal...

Ngày tải lên: 08/03/2014, 02:20

... CHAPTER 3: RESEARCH AND METHODLOGY 3.1. Aims of the project One of questions that the author wondered from the beginning of this thesis is whether any connections between the managerial decision ... increase the number of the ending inventories as well as the profit of the organizations as mentioned above. This not only can be considered as a strategy of the new comers to attract the investments ... method while it can deal with the conflicts of interests between them and their companies. Other managers think that if they use another type of costing methods to reduce and allocate costs more...

Ngày tải lên: 13/03/2014, 14:20

... by the actions of the firm. In the traditional view of the firm, the shareholders view, the shareholders or stockholders are the owners of the company, and the firm only addresses the needs and ... aspect of ethics in the business world. Business Ethics is to express the standards and principles of society and in the world - 11 - subsidies, laid off employees) and 2006 (the contents of ... family business. Therefore, managers must understand the importance of reporting and the implementation of CSR with business operations of the company. And then, the following hypothesis is developed:...

Ngày tải lên: 13/03/2014, 14:20

... by, amongst others, FAO, the OIE, NACA, ASEAN, SEAFDEC and the GAA have clearly defined most of the issues involved. With the availability of SPF and SPF/SPR stocks of P. vannamei and P. stylirostris ... 2 The designation and presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United ... the book “Penaeid and Sergestid shrimps and Prawns of the World by Dr. Isabel Perez Farfante and Dr. Brian Kensley. Most scientists and journal editors have adopted these changes. Whilst the...

Ngày tải lên: 14/03/2014, 11:18

... daughter of Cronus and Rhea, was the goddess of Agriculture. MNEMOSYNE, the daughter of Uranus and Gæa, was the goddess of Memory and the mother of the nine Muses. LETO (Latona) was the daughter of ... in the bright beams of the glorious sun, and the clear, cold rays of the silvery moon; for them the whole universe lived and breathed, peopled by a thousand forms of grace and beauty. The ... THEORIES AS TO THE ORIGIN OF MAN. Just as there were several theories concerning the origin of the world, so there were various accounts of the creation of man. The first natural belief of the Greek...

Ngày tải lên: 15/03/2014, 07:20

... However, they do not and society suffers. Their concept of ideal and realistic standards can have a great affect on individuality, health, and a girls self esteem. There are many different types of ... learn very quickly that they must spend there time, money, and energy on achieving these standards. Girls frequently compare their bodies to those they see around them, and researchers have found that ... are represented in the media. Their goals are to portray women positively, depict women as experts and represent diversity through media. They do this by revealing the true source of negativity, and the impacts...

Ngày tải lên: 21/03/2014, 22:53

... appeared in the medium on each day of culture and that remaining in the matrix at the end of the culture period [41]. From these data, the per- centage of 35 S-labeled proteoglycans remaining in the ... proteinases, and it is therefore likely that the outcome of the inhibition of aggrecanase activity in tendon is the retention of large proteoglycans within the extracellular matrix of the tissue ... inclusion of these sulfated agents there was significant inhibition (40%) of rate of loss of 35 S-labeled large proteogly- cans from the matrix by the end of the culture period. Similarly, by day 10 of...

Ngày tải lên: 23/03/2014, 10:21